rebuild on m8

wastedeep · Mar 16, 2016

Hi I have a 2007 m8 162
How many miles before you rebuild top end ?
Compression cylinder 1 126lbs cylinder 2 128lbs @ 6200'
I have 4630 miles on it and it's never been done.
I'm a back country rider not a trail master.
Do I have to pull motor to do a top end rebuild?
Thanks

Hardass · Mar 17, 2016

It's anybodys guess but that's up there on the miles and yes if you can afford a top end i would do it and you can do it in the sled

e.a · Mar 17, 2016

Would you guys know if I can pop out the rollers on the secondary clutch to replace them?

ultrasks700 · Mar 17, 2016

e.a said:
Would you guys know if I can pop out the rollers on the secondary clutch to replace them?

Yes the rollers can be replaced the clutch needs to be taken apart to do so. With the miles you have its time to have the sleeve bushing addressed. Racin station can take care of you for that.

The topend subject is kind of personal preference, If you are really going to be feeding her the corn then I would say yes not a bad idea to do it. My 07 XF800 had 6000 miles on it and it had 120psi per cylinder. I sold it to my boss fully disclosing the condition, he decided to just run it and said "when it goes, it goes" and it now has 9,500 miles still running strong...

Rose Lake Renagade · Mar 17, 2016

I would probably rebuild it, However I do have a friend with a 2005 M7 with 11,000 miles on it and he's never done a damn thing to it other than gas,oil, and a couple sets of hyfax. One of the best sleds I've ever been around.

Diesel0889 · Apr 21, 2016

As said if you hammer it in the deep powder a lot then I'd say it's about time just think of it as preventing dropping a skirt or whatever else may decide to break. It will cost you more than 300 if it does unless you get very Lucy...

reimer · Dec 10, 2016

ultrasks700 said:
Yes the rollers can be replaced the clutch needs to be taken apart to do so. With the miles you have its time to have the sleeve bushing addressed. Racin station can take care of you for that.

The topend subject is kind of personal preference, If you are really going to be feeding her the corn then I would say yes not a bad idea to do it. My 07 XF800 had 6000 miles on it and it had 120psi per cylinder. I sold it to my boss fully disclosing the condition, he decided to just run it and said "when it goes, it goes" and it now has 9,500 miles still running strong...

What's this sleeve bushing you speak of?

skidooboy · Dec 11, 2016

last year, prime time, wife's 09 m8 hurt the mag cyl at 4000 miles. powervalve seat wore, allowing powervalve to contact the piston, result= zero compression 40 miles from the nearest town, in the back country of northern Ontario. towed out, no fun. cost us a cyl, full top end rebuild, and a powervalve.

mine (same year model sled) has 5000 miles, no issues. did top end this offseason for preventative maintenance. live and learn. you can pay a small price now, or a BIG PRICE later.

sleeve bushing is in the secondary, wear out regularly. M&M in Michigan, and bdx will repair some of them. others you have to buy a whole secondary to replace them. bdx said earlier this year, they were making the last run of these secondary clutches for the diamond drive. Ski

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rebuild on m8

wastedeep

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Hardass

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e.a

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ultrasks700

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Rose Lake Renagade

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Diesel0889

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reimer

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skidooboy

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